Some people complain about the cost of drinks in coffee shops, but not Logan Warren -- he recently ordered the most expensive Starbucks drink possible.

Armed with a Starbucks Rewards card entitling him to a "free birthday drink", the computer technician from Nacogdoches, Texas, decided to see what was the most pricey drink one of the barista could prepare for him.

Looking around online, the most expensive he could find was $14 (£8.80) and Logan knew he could do better, especially as there was no fine print or price limit on the offer.

So after consulting with the baristas for half an hour, the result was a $23.60 (£14.95) Java Chip Frappuccino in a Trenta cup with 16 shots of espresso and syrups, shots and powders.

Speaking of the drink, 22-year-old Logan told NewsLite: "We started with the most expensive base drink--a java chip frappuccino, and added 16 shots of espresso, along with a myriad of powders and fruits.

"It was all about jacking up the price without taking up space in the cup. Top it off with a few shots of syrup, and you have a record."

In addition to the base drink and coffee, the bizarre concoction contained a shot of soy milk, caramel flavouring, banana puree, strawberry puree, vanilla beans, Matcha powder, protein powder, and a drizzle of caramel and mocha.

As for the taste, Logan said it was "Tolerable, but not good. Imagine a coffee-based health food smoothie that will put you in the hospital if you drink it all. That’s how it tastes…like Jillian Michaels with a touch of Chuck Norris."

Despite it not being overly impressed by the "Frankenbrew", he persevered and drank the entire 1400mg caffeine thing, but not wanting to end up in hospital he spread it out over three days.

Asked whether he'd recommend other people ordering the drink he said: "I definitely don't suggest it if you care about flavour. If you have a coupon or a load of cash, and you want to get enough caffeine to make an elephant dance, I highly recommend it!"